For collinear SHG ((\omega_1 = \omega_2 = \omega), (\omega_3 = 2\omega)):
LBO is prized for its very high damage threshold, small walk-off, and non-critical phase-matching (NCPM) capabilities. NCPM, where the interaction direction is along a principal axis, eliminates walk-off and greatly increases angular acceptance.
(\chi^(2)) exists only in non‑centrosymmetric crystals (e.g., BBO, LBO, KTP, LiNbO₃). crystal nonlinear optics with snlo examples pdf
: Models single-pass mixing for long pulses using a plane-wave approximation.
Nonlinear optics (NLO) is a branch of optics that describes the behavior of light in nonlinear media—media in which the polarization density responds nonlinearly to the electric field of the light. This phenomenon is central to modern laser technology, enabling frequency conversion, optical modulation, and the generation of exotic states of light. For collinear SHG ((\omega_1 = \omega_2 = \omega),
This nonlinearity is expressed through the material’s susceptibility (
Compute phase-matching curves and acceptance angles/temperatures for specific wavelengths. : Models single-pass mixing for long pulses using
Using the OPO module, define the crystal (e.g., PPLN), pump pulse characteristics (energy, duration), and resonator properties.
Convert 1064 nm (Infrared) to 532 nm (Green) using a KTP crystal. SNLO Module: Use the Q-Mix or Ref. Ind. function. Steps: Select KTP from the crystal list. Set Wavelength 1 to 1064 nm and Wavelength 2 to 1064 nm.